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Finding the Fourth Proportional to 368,653.16, 552,979.50 and 210,770.90

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Solution

The fourth proportional to 368,653.16, 552,979.50 and 210,770.90 is: 316,156.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,653.16 : 552,979.50 = 210,770.90 : x
  2. Step 2: Convert to fraction form
    368,653.16/552,979.50 = 210,770.90/x
  3. Step 3: Cross multiply
    368,653.16x = 552,979.50 × 210,770.90
  4. Step 4: Simplify right side
    368,653.16x = 116,551,984,131.65
  5. Step 5: Solve for x
    x = 116,551,984,131.65/368,653.16
  6. Step 6: Final answer
    x = 316,156.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.